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I have an old silca that I wanted to keep going. the leather washer was done. I tried to flatten it out in a vise, No worky. Next I got a peice of leather and made a new one. the leather was too soft. tried again with some very heavy leather, it worked this time but fit too tight and did not allow air back under the piston till it was all the way at the top. This is better than homemade.

Prompt delivery, good communication. Obscure part was in stock and shipped immediately! The part was less than one square inch and they could have put 200 of this item in the box. I had to dig through the packing to find the part but it was perfect!!

What you get is what the picture shows. Once you get it mounted on the end of the piston (best way is to thread it on like a nut on a screw), remember to coat it well with either bearing grease or oil (I used Singer sewing machine oil), let the grease/oil soak in overnight and then flare it out so it's almost flat, shape it back down, and then turn it through the threads of the pump cylinder end cap. It will then slip in and form an excellent seal, and the equivalent air volume produced by one stroke with at least double. I've reconditioned old seals this way with great success...but my old one finally developed a tear.

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Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items